topic Re: 4 nodes sync. in Operating System - HP-UX

4 nodes sync.

brian_31 — Tue, 28 Jan 2003 16:24:06 GMT

Hi Everyone:

We have 4 nclass servers running 11.0, 64 bit. MCSG,
all applications, patches etc.. we are doing load
balacing to ensure all the 4 servers are equally
loaded and they are. We have to make sure that all the
4 servers are in sync (i mean the files, directories
etc..) how do go about doing this job? How to make
sure all the nodes are in sync
Node A (nis master)(also running veritas backup)
Node B (nis slave)
Node C (nis slave)
Node D (nis slave)
all of them are single node MCSG clusters with the
same patches.

please advise.

Thanks in advance,

Regards,
Brian.

Re: 4 nodes sync.

A. Clay Stephenson — Tue, 28 Jan 2003 16:50:53 GMT

NIS will take care of itself. If this were me I would look into rdist - it's made to do this sort of thing but it operates at the file level which can lead to large transfers of very dynamic data. You may need to look into a more home-grown solution that does block-by-block checksums and stores them in a database or your applications may need to keep change logs and apply deltas to the other systems. All of this will depend on how dynamic are the data. My first cut would ceratinly be rdist. Man rdist for details.

Re: 4 nodes sync.

Giri Sekar. — Tue, 28 Jan 2003 20:36:07 GMT

Hi:

Take a look at

http://software.hp.com/products/SIM/info.html

Also there is free utility called rsync.

I have not used it so can't comment on that. But if you are talking about all the files then it may not be possible.

Giri Sekar.

Re: 4 nodes sync.

brian_31 — Tue, 28 Jan 2003 21:09:00 GMT

Hi:

Never heard of that tool? is anyone using that?

Thanks
Brian.

Re: 4 nodes sync.

Robert-Jan Goossens — Tue, 28 Jan 2003 21:34:43 GMT

Hi Brian,

If you mean rsync, take a look at next link.

http://hpux.connect.org.uk/hppd/hpux/Networking/Admin/rsync-2.5.5/

Kind regards,

Robert-Jan.